Frequencies for first 10,000 rows of pct0210156 variable in sf12010860us19 dataset :

   Military |
ships (602) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,990       99.90       99.90
          1 |          1        0.01       99.91
          2 |          1        0.01       99.92
          4 |          1        0.01       99.93
          8 |          1        0.01       99.94
         13 |          1        0.01       99.95
         20 |          1        0.01       99.96
         22 |          1        0.01       99.97
         29 |          1        0.01       99.98
        211 |          1        0.01       99.99
       2928 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017